Erdin

You have the Arduino 3.3V pin to power the sensor and GND to GND. That is good.You should connect the three analog outputs (XOUT, YOUT, ZOUT) to three analog inputs.If you print the analog value to the serial monitor, it is easier to know what is going on if you see the value of 3 axis.

The level shifter is for digital signals. Like the I2C or SPI bus or other signals.If you buy a sensor that uses 3.3V and has a I2C interface, you can use that level shifter, but not for the analog output of the MMA7361.